After celebrating her 35th birthday Friday night with the likes of Katie Holmes, Eva Longoria and Jennifer Lopez, Posh did a little spring shopping with her boys at The Grove Saturday afternoon. Wearing a black tulip dress with a killer exposed zipper, Mrs. David Beckham was her usual glam and a devoted mom all at the same time. This wasn't the first time we've seen Posh wearing an exposed zipper, as the mega star has favored this trend the past few weeks. While Victoria's trend outfits are sometimes a bit much, we think this trend is a keeper. What do you think?